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Notes Payable to Officers and Directors - Additional Information (Detail) (Chief Executive Officer, USD $) In Millions, unless otherwise specified	1 Months Ended
	Jan. 31, 2013	Feb. 28, 2014
Chief Executive Officer
Debt Instrument [Line Items]
Borrowing from CEO	$ 0.50	$ 0.25
Interest rate on borrowings	8.00%

Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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